Title:
ELECTRIC TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2011/024570
Kind Code:
A1
Abstract:
Provided is an electric transformer wherein if a vegetable oil is used for a tap switching device, the variation of the property of the vegetable oil can be suppressed, and the performance of the tap switching device can be maintained.
An electric transformer (1) is comprised of a switching device tank (5a) which contains a tap switching device (5), a rapeseed oil (5c) charged into the tank (5a), an oil expansion chamber (10) which stores the rapeseed oil (5c) supplied from the tank (5a), and a rubber bag (12) which is provided so as to fill the space in the oil expansion chamber (10) not filled with the rapeseed oil (5c), and the inside of the rubber bag (12) communicates with the outside of the oil expansion chamber (10).
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Inventors:
SASAKI, Ei (9 Aza-Tennohara, Matsukawa-machi, Fukushima-sh, Fukushima 92, 〒9601292, JP)
Application Number:
JP2010/061780
Publication Date:
March 03, 2011
Filing Date:
July 12, 2010
Export Citation:
Assignee:
KITASHIBA ELECTRIC CO., LTD. (9 Aza-Tennohara, Matsukawa-machi Fukushima-sh, Fukushima 92, 〒9601292, JP)
北芝電機株式会社 (〒92 福島県福島市松川町字天王原９番地 Fukushima, 〒9601292, JP)
北芝電機株式会社 (〒92 福島県福島市松川町字天王原９番地 Fukushima, 〒9601292, JP)
International Classes:
H01F27/02; H01F27/14
Attorney, Agent or Firm:
SATO & ASSOCIATES (Nishi-Shinjuku Mitsui Building 18F, 24-1 Nishi-Shinjuku 6-chome, Shinjuku-k, Tokyo 23, 〒1600023, JP)
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